A High-Gain Circularly Polarized Filtering Stacked Patch Antenna

被引：34
作者：
Cheng, Guangshang [1 ,2 ]
Huang, Baoqing [1 ,2 ]
Huang, Zhixiang [1 ,2 ]
Yang, Lixia [1 ,2 ]
机构：
[1] Anhui Univ, Mat & Intelligent Sensing Lab Anhui Prov, Hefei 230601, Peoples R China
[2] Anhui Prov Key Lab Target Recognit & Feature Extra, Luan 237010, Peoples R China
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2023年 / 22卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Filtering; Antennas; Antenna measurements; Substrates; Gain; Slot antennas; Resonator filters; Circularly polarized (CP); filtering antenna; high-gain; radiation nulls; stacked patch; DIELECTRIC RESONATOR ANTENNA; LOW-PROFILE; COMPACT;
D O I：
10.1109/LAWP.2022.3229951
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A high-gain circularly polarized (CP) filtering stacked patch antenna with independently controllable radiation nulls is designed without an additional filtering circuit/network in this letter. The lower radiation patch consists of a square outer loop and a three-quarter circular inner ring to realize CP radiation, with the inner ring connected to two adjacent edges of the outer loop. In addition, the upper stacked patch provides improved impedance matching and CP characteristics within the passband. Furthermore, a U-slot and a square annular slot are etched on the lower and upper patches to generate two radiation nulls and obtain a filtering characteristic in the lower and upper stopbands, respectively. A prototype is fabricated and measured, and the measured results show that the proposed antenna can provide an impedance bandwidth of 15.2% (1.83-2.13 GHz), an axial ratio bandwidth of 8.2% (1.87-2.03 GHz), and a gain higher than 7.0 dBi.
引用
收藏
页码：995 / 999
页数：5
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